Roller-bearing.



Patented Sept. 3, I90I.

J. HUTCHISON.

ROLLER BEARING.

[Application led Mar. 21, 1901.)

(No Modal.)

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JOHN HUTOIIISON, OF JACKSON, MICHIGAN.

ROLLER-BEARING.

SPECIFICATION forming part of Letters Patent No. 681,793, dated September 3, 1901. Application filed March 21, 1901. Serial No. 52,207. (No model.)

To @ZZ u'tont it may concern.'

13e it known that I, JOHN IIUTCHISON, a citizen of the United States, residing at Jackson, in the county of Jackson and State of Michh gan, have invented certain new and useful Improvements in Rollei-Bearingsg and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in roller-bearings; and its objects are to provide improved means for retaining the rolls in line with the axis of the shaft, to provide a simpler, cheaper, and more durable construction, and to provide the device with certain new and useful features, hereinafter more fully described7 and particularly pointed out in the claims.

Heretofore it has been considered necessary to connect the rings at the ends of the rolls by bars to form a rigid cage in order to keep the rolls in line with the axis of the shaft. This is expensive, and the cage is liable to become twisted by the strain thereon, and thus become worthless, unless made quite strong. I have found that by forming the rolls with ends in planes at right angles to the axes of the rolls and of the full diameter of the rolls and abutting these ends against parallel surfaces at right angles to the axis of the shaft and making the rolls of sufficient diameter they would be retained in line with the axis of the shaft without binding and the cage construction be successfully dispensed with.

I am aware that attempts have heretofore been made to dispense with the cage, but so far without success. The rolls would not be properly retained in line with the axis of the shaft and would bind and fail to operate in a proper manner. I make the diameter of the rolls sufficient to give a width of bearing against parallel surfaces at each end of the rolls to effectually keep the rolls in line with the shaft without other means for this purpose. I have shown rolls having a diameter of substantially one-half that of the shaft and having a length of four times their diameter. I find this proportion amply suiiicient to afford the necessary width of end bearing to the rolls; but I do not limit myself to any specific proportions.I The proportions may be varied without affecting the operation of the device.

My device consists, essentially, of a series of rolls surrounding the shaft, each having its ends faced off at right angles to its axis and of the full diameter of the roll, and freely and independently rotative rings arranged parallel to each other and against which rings the ends of the rolls abut-that is to say, the ends of the rolls bear against the rings and have sufficient Width of such bearing to maintain the axis of the rolls at right angles to the surfaces of the rings-said rings also being provided with projections extending between the rolls, as will more fully appear by reference to the accompanying drawings, in which- Figure lis a longitudinal section on the line l l of Fig. 2 of a device embodying my invention; Fig. 2, a transverse section of the same on the line 2 2 of Fig. 1; Fig. 3, a detail of the rings; Fig. 4, a side elevation of the device with the case removed, and Fig. 5 a detail showing a modification of the device.

Like letters refer to like parts in all of the figures.

A represents a portion of the shaft.

Bis a cylindrical casing surrounding the shaft and of considerably greater internal diamet-er than the diameter of the shaft.

O are annular heads secured to the casing in any convenient manner and having axial openings to freely receive the shaft A. Embedded in these heads and freely rotative therein are flat rings D, having inwardly-projecting triangular projections E to extend between the rolls F and retain the same parallel with each other and separated equidistant from each other. The rolls F are of suitable diameter to contact with the shaft A at one side and the case B at the other side and roll freely between the same and of such length that their ends will abut against or closely engage the respective rings Without unduly binding between the same. The rings D are held in parallel planes by the heads C at one side and the ends of the rolls F at the other side and are simultaneously rotated therein by the rolls F. The projections E serve to keep the rolls out of contact and parallel to each other.

I do not limit myself to any particular form IOO of projection, the essential feature of my device being the transverse bearing-surfaces at the ends of the roll of sufficient diameter to hold the rolls parallel with the shaft and vertical to the surfaces engaged by said bearing. It is evident also that the projections E may be omitted and axial bearings F provided for the rolls, as shown in Fig. 5, Without in any Way departing from my invention.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

l. In a roller-bearing, rings independently rotative, and having opposing parallel surfaces at right angles to the axes of the rolls, and rolls having ends abutting against the rings, whereby the rolls are retained in line with the axis of the shaft, substantially as described.

2. In a roller-bearing, a case having ann ular heads, rings independently rotative in the heads, and having opposing parallel surfaces at right angles to the axis of the shaft, and rolls having bearing-surfaces of the full diameter of the rolls, and engaging the rings, substantially as described.

3. In a roller-bearing, a case having annular heads, rings independently rotative in the heads, and having inwardly-projecting portions between the rolls, and opposing parallel surfaces at right angles to the axis of the shaft, and rolls having bearing-surfaces of the full diameter of the rolls, and engaging the parallel surfaces of the rings, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

JOHN HUTUHISON.

Witnesses:

A. E. HEWETT, EUGENE PRINGLE. 

